Greatest Common Factor of 20, 99, 128

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 20, 99, 128 by common division method
• Greatest Common Factor of 20, 99, 128 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 99

List of positive integer factors of 99 that divides 99 without a remainder.

1,3,9,11,33,99

Factors of 128

List of positive integer factors of 128 that divides 128 without a remainder.

1,2,4,8,16,32,64,128

Greatest Common Factor

We found the factors 20,99,128 . The biggest common factor number is the GCF number.
So the greatest common factor 20,99,128 is 1.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 62, 45, 193
• GCF of 63, 92, 425
• GCF of 96, 88, 858
• GCF of 67, 92, 441
• GCF of 71, 90, 407

1. What is the GCF of 20, 99, 128?

Answer: GCF of 20, 99, 128 is 1.

2. How to Find the GCF of 20, 99, 128

Answer: Greatest Common Factor(GCF) of 20, 99, 128 = 1

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(20, 99, 128) = 1.